Historical
DIN 51517-2:2014
Lubricants - Lubricating oils - Part 2: Lubricating oils CL, Minimum requirements (Foreign Standard)
This document specifies minimum requirements for type CL lubricating oils, which are primarily used for circulation systems and where elevated requirements exist for the oxidation stability and corrosion prevention characteristics in comparison with type C lubricating oils according to DIN 51517-1.
Deutsches Institut für Normung [din]